Statistical graph forming apparatus



Aprifi 4, 11950 E. CORREA STATISTICAL GRAPH FORMING APPARATUS 4 Shee'ts-Sheet 1 Filed July 50, 1947 TQEQEQ J 1 JVIJIO 8 INVENTOR Estunisloo Correo, BY 1:3. W

ATTORNEY iwl 7 2 m t w m A 5 w 8 O a t 7 l e 2 w l r h r s 3 7 WW M m 4 8 5 6 m II S F m 0 m M. m m E E CORREA STATISTICAL. GRAPH FORMING APPARATUS l2 lug INVENTOR BY I 0 71/ ATTORNEY 7 9 7 1 6 Q 4 2 3 3 5 0 w 5 x A 7 1 7 N/ 4 m A 2 FL d r e P u A F Aprifl 4, 1950 E. CORREA STATISTICAL GRAPH FORMING APPARATUS 4 Sheets-Sheet 5 Filed July 30, 1947 w K m ma ATTORNEY Apyill 4, 1950 E. CORREA 2,5(D2fl07 STATISTICAL GRAPH FORMING APPARATUS Filed July 30, 1947 4 Sheets-Sheet 4 @QQCXDQ I I.\'VENT( ESTANISLAO QOR R EA ATTK )RNEY Patented Apr. 4, 1950 QFFICE STATISTICAL GRAPH FORMING APPARATUS Estanislao Correa, Santiago, Chile Application July 30, 1947, Serial No. 764,707 In Chile July 22, 1947 3 Claims. 1

The present invention relates to statistical column graphs and particularly to an apparatus for forming such graphs in a framed structure with vertically adjustable columns indicating the various quantities of the items which the graph is required to represent at any given time, the apparatus being also provided with means for screening from view the columns which may not be required for a graph which is being formed.

Up to the present such graphs have generally been drawn on paper by hand whenever such statistical information is required in an establishment, for any period of time as, for example, the monthly consumption of different materials, wages, etc. in a factory. These drawings require, of course, many hand-drawn alterations if progressively increasing items must be shown and often a multiplicity of such drawings is needed to complete the statistical graph representation. With the use of the apparatus of the present invention no drawings are required and the difierent graphs formed may be simply photographed.

An object of the present invention is to provide an apparatus of the kind above mentioned provided with hand-operated devices whereby the adjustment of the said statistical columns to the required height may be performed.

Another object of the invention is to provide such apparatus with hand-operated screening devices whereby any selected column in each of a series or similar groups of columns may be screened out of view.

The apparatus consists substantially in a rectangular framed structure provided with a series of vertically arranged endless cords or belts which run on pulleys and are moved by hand with devices which permit the vertica1 adjustment of statistical columns painted on said cords or belts, the adjustment being done individually, and the cords having diiferent colours to represent the different items of the graph, one half of the cord being coloured black to depict the column.

In order to hide from view one or more columns in each group of columns representing like items for different periods of time, a set of handoperated screening devices is provided, each of which screens simultaneously the corresponding item in all the groups.

For indicating the quantities corresponding to the various heights of the columns removable vertical scales are inserted in the apparatus with graduations to suit the graph, and removable horizontal strips which may indicate the corresponding periods of time of the graph and the totalizing columns, are also provided.

In order that the present invention may be clearly understood it will be described hereinbelow in connection with the accompanying drawings in which:

Fig. 1 is a front View of a statistical graph forming apparatus constructed in accordance with the present invention;

Fig. 2 is an enlarged cross-section of the apparatus taken on the line II--II of Fig. 1;

Fig. 3 is a cross-section taken on the line IIIIII of Fig. 2;

Fig. 4. shows an internal structure of the apparatus which supports the column cords and column adjusting and screening devices for same;

Fig. 5 is a cross-section on the line 1'V'-IV of Fig. 4;

Fig. 6 is a partial elevation showing portions of the column cords, screens, screen connections and screen supports; and

Fig. '7 is a cross-section on the line VI-VI of Fig. 6.

Like reference numerals and letters indicate the same parts in all the drawings.

In the figures, I is a framed structure I within which are arranged a number of endless parallel cords 2 of substantially circular cross-section and which are movable around pulleys 3, 4 and a roller 5 by a device which will be hereinafter described. These endless cords form the statistical columns which, in the example illustrated, are divided into groups of six corresponding to six different items of the graph and, as mentioned above, each column of a group has a different colour, and each group corresponds to a different period of time, in the present case, to every month in the year with an additional totalizing group. As has already been said, these cords are painted black on half their length so that the height of the column may be clearly seen.

The adjustment of the column heights is effected by driving the cords 2 round pulleys 3, 4 and roller 5 by a hand-operated device comprising a knob 6 fixed to one end of a tubular member 7 at the other end of which is a cam member 8 which engages a similar cam member 9 fixed on a plate l0. At the rotation of knob 6 in a clockwise direction cam 8 pushes the coacting cam 9 and plate in to the left (as seen in Figs. 2 and 3) thereby pushing towards the left a cup-shaped member I l which is fixed to the end of a rod I2 slidably adjusted in tube 1. The cupshaped member I I has a milled circular edge and when it is pushed to the left by the joint action of cams 8, 9 said milled edge engages a rubber roller I3 which is pushed at the same time to the left and engages the rim 3' of pulley 3 which is of larger diameter than the other rim 3 thereof. When this latter engagement takes place said pulley 3 may be rotated by means of hand knob I4 fixed to the outer end of rod I2. The rubber roller I3 rotates on shaft I5 supported 'by a block member I6 which advances with roller I3 guided by pins I'I fixed to a sliding member or runner I8. This runner I8 can be slid by hand horizontally on the graph apparatus to any desired position along a base, plate I9 provided with parallel beadings which engage corresponding slots 2I for guiding runner I8. This runner is also provided with a pointer 22 for indicating the column on which the adjusting device is to operate. The pulleys 3 adjacent to the one on which the column adjusting device operates are clamped by block member I6 when roller I3 is pushed into engagement with rim 3 of the pulley. This clamping action may be more clearly seen from an inspection of Fig. 3 and is convenient to prevent rotation of said adjacent pulleys by frictional contact of the operated pulley with them. When the column adjusting device is disengaged from a pulley by turning knob 6 in a counterclockwise direction, roller I3 and its connection return to their disengaged position through the action of a spring 23 in knob I4.

The shafts 34 and 25 of the pulleys 3 and :1, respectively, and shaft 26 of roller 5, which extend through the whole length of the graph, are supported by the internal structure shown in Figs. 4 and 5 which comprises a series of upright members 27 secured by flanges 28 to horizontal members 29 and to the top and bottom of the outer casing of the apparatus by flanges 30 and 3I. The uprights 21 are provided with recesses 32 for accommodating screen levers channel connecting rods 31.

On the left hand side of the front of the graph forming apparatus illustrated in Fig. 1 there are shown rotatable knobs A, B, C, D, E and F which actuate separate screening devices for selectively concealing the statistical columns as above described. In the example given, there are six items or columns, marked G, H, I, J, K and L, to each group and one group for every month in the year and a final totalizing group but, of course, the number of columns and groups may be different according to the requirements of the graph. Each of the six knobs A, B, C, D, E and F actuates by rotation a separate screening device and simultaneously conceals a column in all the groups, corresponding to the same item. The screening devices are identical, and each comprises cylindrically curved plate rotatable screens 33; co-axial with the front vertical portion of the column cords 2 and are provided with longitudinal slot openings 34. The screens are rigid with levers 35 and are jointed at 36 at a connecting Ll-section rod 31 which in turn is pivoted at 38 to a link 39 and this latter to lever member 43 fixed to a spindle 4| which passes through the frame and is secured to a corresponding one of the knobs A, B, C, D, E and F. It will be seen that on rotating one of these knobs through a certain angle the rod 37 will make the screens connected thereto rotate through an angle which is sufficient to leave in sight the corresponding columns. Each of the knobs is preferably provided with a pointer 42 tcindicate the position of the screening devices. In Fig. 1 are shown, in solid 4 black two columns, J and L, put in sight by knobs D and F.

The screens 33 are supported in position at both their ends by flanged plates 43 with circular apertures co-axial with the column cords 2 and through which these cords pass. The flanged plates 43 are secured to horizontal correspondingly perforated plate strips or wooden pieces 44 supported at their ends by the frame structure of the apparatus.

The apparatus is preferably provided with a front glass with suitable horizontal lines, engraved or otherwise formed, to facilitate the reading of the column heights and the comparative changes thereof indicated by the vertical scales 45 to which reference has already been made. These removable scales may have, of course, any suitable graduation. Also the horizontal removable strips 46 may indicate any suitable periods of time with divisions suitable to the distances taken up by the columns. These scales and strips may be slidably adjusted in channels such as 41.

Thus has been described particularly, by way of example, one mode of construction of an adjustable column graph forming apparatus in accordance with the present invention, but it must be understood that its construction is not necessarily limited to the apparatus described and that many modifications may be made therein within the scope of the invention as stated in the appended claims. For instance, the column cords used may be replaced by flat bands moved on corresponding pulleys actuated by the adjusting device above described. Alternatively, this band adjusting device may be provided with toothed instead of friction gearing, and a single push-and-turn knob may be substituted for the double knob arrangement described. Should fiat bands be substituted for the cords, a flat slotted screening arrangement may be adopted, with a straight transversal motion instead of the rotating motion above described.

I claim:

1. In an adjustable statistical column graph forming apparatus, a plurality of movable endless cords or belts having colored portions thereon forming statistical columns, a screening device for the effective run of each cord or belt and a hand-operated mechanism for displacing the said screening device whereby selected statistical columns of the graph can be exposed.

2. In an adjustable statistical column graph forming apparatus, a plurality of movable endless cords or belts having colored portions thereon forming statistical columns, a screening device for the effective run of each cord or belt and hand-operable mechanism for displacing the said screening device, said screening device being in the form of an. opaque tube surrounding the effective run of the cord to which it is associated, the tube being rotatable about its axis and having a longitudinal slot for exposing the statistical column.

3. In an adjustable statistical column graph forming apparatus, a screening device for each statistical column and a hand-operated mechanism for displacing the said screening devices whereby selected statistical columns of the graph can be exposed, said hand-operated displacing mechanism comprising a series of rotatable members located on the front surface of the graph apparatus and at one side thereof, said members being connected to said screens and operable to either expose or screen a selected column in 5 each of a series or similar groups of columns upon Number rotation of a corresponding member. 827,539 ESTANISLAO CORREA. 1,009,144 1,137,273 REFERENCES CITED 5 1,623,216 The following references are of record in the 1,711,980 file of this patent: 1,711,981 1,740,978 UNITED STATES PATENTS Number Name Date 10 640,145 Mudd Dec. 26, 1899 gg g 778,490 Howard Dec. 27, 1904 Name Date Kohlmeyer July 31, 1906 Haddon Nov. 21, 1911 Meyers et a1 Apr. 27, 1915 Szepesi Apr. 5, 1927 Andres et al. May 7, 1929 Andres et al May 7, 1929 Goldsmith Dec. 24, 1929 FOREIGN PATENTS Country Date Great Britain Nov. 29, 1928 

